Lens Hood ET-87 sticks

[dolfin07]

The ET-87 lens hood for my 70-200mm f/2.8L IS II USM Lens, which has served me well for a dozen years, is increasingly "sticky" - meaning it is difficult to attach or detach.  I've inspected it, and the lens, for dirt - but both are whistle clean.

Knowing I should be extremely conservative in applying (less is more), any recommendations for a lubricant? 

[Tronhard]

Hi and welcome to the forum:
Well, there are a couple of potential fixes.  I suspect that the surfaces of the collar, where they connect to the lens front, have probably become abraded with the taking on and off, so using a cloth with some tooth gel  to judiciously work around each surface might reduced said friction.

Alternatively, there are lots of third-party hoods out there for the 70-200 range at reasonable prices.  I got one for my 70-200 when I purchased it new and actually used that, so when I sold the lens recently the hood was as new and went on very smoothly.

[dolfin07]

Thank you Trevor . . .
never a bad idea to maintain good dental hygiene on one's kit!

[Tronhard]

Your images will have that 'Ring of confidence' if you use Colgate gel! 😄